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18 Cards in this Set
- Front
- Back
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Collinear
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point are said to be collinear if they line on the same straight line
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convex
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a polygon such that no side extended cuts any other side or vertex; it can be cut by a straight line in at most two points.
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glBufferSubData
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allows you to update parts of an existing buffer object with new data
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glBufferSubData(var 1, var2, var3, var4)
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var1- which array in the buffer you want to update
var2- which byte in the buffer to start writing data at var3- how many bytes to read from the memory pointer var4- memory pointer |
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hidden-surface
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only see faces of objects that are in from of all other faces as seen by the viewer
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visible-surface algorithms (hidden-surface-removal algorithms)
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Algorithms for ordering objects so that they are drawn correctly
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z-buffer
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algorithm that is a visible surface algorithm supported by OpenGL
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move event
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event generated when the mouse is moved with one of the buttons pressed
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passive move event
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mouse is moved without a button being held down
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mouse event
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when one of the mouse buttons is pressed or released (mouse down/mouse up)
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reshape event
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allowing a user to resize the window interactively
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idle callback
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invoked when there are no other events
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refresh rate
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the rate at which the frame buffer is redisplayed (60 -100 HZ or frames per second)
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double buffering
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hardware contains two buffers
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front buffer
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buffer that is displayed
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back buffer
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buffer that is available for constructing what you would like to display
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once the drawing is complete, you swap the front and back buffers and.....
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clear the back buffer to start drawing in it again if necessary
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instead of calling glFlush at the end of a display callback, for double buffering you call.....
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glutSwapBuffers();
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